Which of the four abdominal muscles listed below do all of the other three muscles insert on?
A) transverse abdominis
B) internal oblique
C) rectus abdominis
D) external oblique
C
Explanation:
A) The transverse abdominis is deep to the internal oblique and forms the deepest layer of the abdominal wall.
B) The internal oblique lies deep to the external oblique and is the second of the three lateral layers of the abdominal wall.
C) The rectus abdominis is the abdominal muscle on which the external oblique, internal oblique, and transverse abdominis all insert. It is a long, ribbon-like muscle in the midline of the ventral surface of the abdomen.
D) The external oblique is the most superficial of the lateral abdominal muscles.
You might also like to view...
Answer the following statements true (T) or false (F)
1. The pharyngeal-esophageal phase of swallowing is involuntary and is controlled by the swallowing center in the thalamus and lower pons. 2. All the chemical and mechanical phases of digestion from the mouth through the small intestine are directed toward changing food into forms that can pass through the epithelial cells lining the mucosa into the underlying blood and lymphatic vessels. 3. Pepsinogen is the precursor to the gastric enzyme for protein digestion and is secreted by the parietal cells. 4. The main chemical activity of the stomach is to begin the digestion of proteins. 5. The major role of absorption in the ileum is to reclaim bile salts to be recycled back to the liver
After taking their wedding vows, a bride and groom often ceremonially use which of the following muscles before walking away from the altar?
A. Depressor anguli oris B. Orbicularis oris C. Levator labii superioris D. Platysma E. Quadriceps femoris
According to the Frank-Starling law of the heart,
a. the shorter the initial length of the cardiac muscle fibers prior to contraction the more forceful will be the subsequent contraction, because the fibers are already partially contracted. b. increasing the venous return increases the end-diastolic volume, which leads to an increased stroke volume, so the heart normally pumps out all of the blood returned to it. c. as cardiac output is reduced, blood pools in the vasculature so that arterial blood pressure increases. d. the output of the left side of the heart must always exceed that of the right side of the heart because the right side only pumps blood to the lungs, whereas the left side must pump blood to the rest of the body. e. the greater the stroke volume, the smaller will be the subsequent end-diastolic volume because as more blood is squeezed out, the heart cannot fill as completely.
Which of the following represents the correct pathway for sperm during ejaculation?
A. Ductus deferens - ejaculatory ducts - rete testes - efferent ductules - epididymis - seminiferous tubules - prostatic urethra - penile urethra - outside the body B. Rete testes - efferent ductules - epididymis - seminiferous tubules - ductus deferens - ejaculatory ducts - prostatic urethra - penile urethra - outside the body C. Seminiferous tubules - ductus deferens - ejaculatory ducts - rete testes - efferent ductules - epididymis - prostatic urethra - penile urethra - outside the body D. Seminiferous tubules - rete testes - efferent ductules - epididymis - ductus deferens - ejaculatory ducts - prostatic urethra - penile urethra - outside the body